... Economic&Technological Development Zone, Qingdao, is a famous private special-vehicle manufacturer in Shandong Province. Our company Covers an area ... year.Our company are now mainly engaged in refitting special vehicles and manufacturing kinds of semi-trailers and ... tank semi-trailer, tanker truck,oil tanker,refuel tanker,fuel tank truck,liquid tanker truck,oil tanker truck,low-flatbed semi-trailer, ...